Gastrointestinal parasitism in feeder calves of southern Illinois.
D000818:Animals; D002417:Cattle; D004813:Epidemiology; D007087:Illinois; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000662:veterinary; D014252:Trichostrongyloidiasis / Q000453:epidemiology / Q000662:veterinary